RO ComponentsAuto-flushing Control BoxContact Us to PurchaseFeatures Auto-flushing the RO membrane in system at regular time. LED indicator, easy to see. Specification Model Type Spec Remark EC-0170 LED control box for R.O. system 220VAC EC-0169 LED control box for R.O. system 110VAC Application CL-200~CL-700 series